Which attractive force is the weakest force between molecules?.

Answer

Explanation

Note: The reaction is a double replacement reaction in which two soluble ionic compounds react in an aqueous solution to form an insoluble solid.

In this case, a solution of sodium carbonate, Na2CO3, will contain

The complete balanced equation that occurs when sodium carbonate is added to hard water is

Answer:

hope you like it

Explanation:

No, your refreshing glass of water won't spontaneously combust. Water is made up of two elements, hydrogen and oxygen. Hydrogen is flammable, but oxygen is not. ... You can, however, break it down into hydrogen and oxygen by putting energy into it, in the form of an electric current.

Answer: all mass takes up space. everything has mass. Theres a unit of mass called a slug thats not the bug!

Explanation:

Answer:

gas is this: a substance (such as oxygen or hydrogen) that is like air and has no fixed shape. : a gas or mixture of gases that is burned as a fuel.

Explanation:

Gas is one of the four fundamental states of matter. A pure gas may be made up of individual atoms, elemental molecules made from one type of atom, or compound molecules made from a variety of atoms. A gas mixture, such as air, contains a variety of pure gases.

Answer: According to Kinetic Molecular Theory, an increase in temperature will increase the average kinetic energy of the molecules. As the particles move faster, they will likely hit the edge of the container more often.

Answer:According to Kinetic Molecular Theory, an increase in temperature will increase the average kinetic energy of the molecules. As the particles move faster, they will likely hit the edge of the container more often.

Explanation:

Based on the the relative strengths of the intermolecular attractions, the correct selections are:

a. C₃H₈ > CH₄

c. ICl > I₂

e. H₂Se > H₂O

g. CH₂Cl₂ > CH₃Cl

i. NOF > NOCl

To determine the substance with the higher boiling point based on the relative strengths of intermolecular attractions, we need to consider the types of intermolecular forces present in each substance. The stronger the intermolecular forces, the higher the boiling point.

a. C₃H₈ > CH₄: C₃H₈ (propane) has a higher boiling point than CH₄ (methane) because propane has a larger molecular size and exhibits stronger London dispersion forces due to increased electron-electron interactions.

c. ICl > I₂: ICl (iodine chloride) has a higher boiling point than I₂ (diatomic iodine) due to the presence of polar covalent bonds in ICl. The dipole-dipole interactions between the polar I-Cl bonds in ICl are stronger than the London dispersion forces in I₂.

e. H₂Se > H₂O: H₂Se (hydrogen selenide) has a higher boiling point than H₂O (water) because H₂Se molecules exhibit stronger London dispersion forces compared to H₂O, which has hydrogen bonding.

g. CH₂Cl₂ > CH₃Cl: CH₂Cl₂ (dichloromethane) has a higher boiling point than CH₃Cl (chloromethane) due to the presence of two chlorine atoms in CH₂Cl₂, which enhances the strength of London dispersion forces compared to the single chlorine atom in CH₃Cl.

i. NOF > NOCl: NOF (nitrogen monoxide fluoride) has a higher boiling point than NOCl (nitrogen monoxide chloride) because the fluorine atom in NOF forms a stronger hydrogen bond with nitrogen compared to the chlorine atom in NOCl, resulting in stronger intermolecular forces.

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The symbol [He] represents the electron configuration of a helium (He) atom. Helium has two electrons, and its electron configuration is 1s^2.

The [He] notation is used to indicate that the core electrons of the element being referred to have the same electron configuration as a helium atom.

In the case of [He], it implies that all electrons in the 1s orbital are considered core electrons. Core electrons are the electrons that are closest to the nucleus and are not involved in chemical bonding or interactions with other atoms. They are generally not shown in chemical equations or reactions as they do not participate in the chemical behavior of an element.

So, the symbol [He] implies that the core electrons include the two electrons in the 1s orbital of the element being described.

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The balanced reaction equation is;

X2 + 3H2 + 2XH3

The steps in balancing reaction equations are;

Write the unbalanced chemical equation, using correct chemical formulas for the reactants and products.

Count the number of atoms of each element on both sides of the equation, and make a list of the elements and their corresponding numbers.

Begin by balancing the elements that appear in only one compound on each side of the equation.

Adjust the coefficients of the reactants and products to make the number of atoms of each element the same on both sides of the equation.

Check that the equation is balanced by counting the number of atoms of each element on both sides of the equation again.

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d. The polymorphic form of fat crystals is in a glassy state is NOT true.

The statement that the polymorphic form of fat crystals is in a glassy state is not true. Polymorphism refers to the ability of a substance to exist in multiple crystal structures or forms. Lipids, including fats, can exhibit polymorphism, meaning they can crystallize in different arrangements or crystal forms.

When it comes to the texture of foods containing lipids, the polymorphic form of fat crystals does play a significant role. The specific crystal form and arrangement of the lipids can affect the texture of the food, influencing factors such as mouthfeel, creaminess, and stability.

The solid fat content versus temperature profile is an essential factor in determining texture, as stated in option a. The morphology of the crystals formed, as mentioned in option b, also plays a crucial role in texture. Option c is true as well, as foods containing partially crystalline lipids can exhibit a "plastic" texture.

However, option d is not accurate because the polymorphic form of fat crystals can exist in various states, including crystalline and semi-crystalline states, but not in a glassy state. Glassy states are typically associated with amorphous materials rather than crystalline structures.

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Answer:

a. p-bromofenol o 4-bromo-fenol.

b. Diisopropil éter.

c. p-nitrofenol o 4-nitro-fenol.

d. isopropil-fenil éter o fenóxido de isopropilo.

Explanation:

Hola.

En este caso, siguiente las normas IUPAC de nomenclatura orgánica, obtenemos los siguientes nombres:

a. p-bromofenol o 4-bromo-fenol: nota que el bromo es un radical presente en el cuarto carbono del fenol dado.

b. Diisopropil éter: en este caso, nota que el oxígeno central hace que la molécula sea un éter, cuyos radical son ambos isopropil.

c. p-nitrofenol o 4-nitro-fenol: nota que el nitro (NO2) es un radical presente en el cuarto carbono del fenol dado.

d. isopropil-fenil éter o fenóxido de isopropilo: nota que el oxígeno central hace que la molécula sea un éter, cuyos radical son isopropily y el otro fenil, por lo que se nombran en orden alfabético o de número de carbonos (de más a menos).

¡Saludos!

Answer:

well, we have so much better and more tech and we are a lot smarter than we were before.

Explanation:

Answer:

We have way more advanced technology than our ancestors and we have a better idea of how the earth was millions of years ago.

Explanation:

Answer:

survival and defense......... plz mark me brainliest

The isomerization of dihydroxyacetone phosphate (DHAP) to glyceraldehyde 3-phosphate (GAP) has an equilibrium constant ΔGº is -3879.6 J/mol

Step 1: Information is provided

ΔG°′=7.53 kJ/mol is the typical change in Gibbs free energy.

298 K is the temperature.

The isomerization of dihydroxyacetone phosphate (DHAP) to glyceraldehyde 3-phosphate (GAP) has an equilibrium

[glyceraldehyde-3-phosphate]=0.00100 M [dihydroxyacetone phosphate]=0.100 M.

Step 2: Figure out ΔG for this reaction.

ΔG is equal to ΔG° + RT ln ([glyceraldehyde-3-phosphate]/[dihydroxyacetone phosphate]) with ΔG° = 7.53 kJ/mol = 7, R = 8.314 J/mol*K, T = 298 K, [glyceraldehyde-3-phosphate]=0.00100 M, and [dihydroxyacetone phosphate]=0.100 M.

ΔG is equal to 7530 J/mol plus 8.314 x 298 x ln(0.001/0.1).

ΔG = -3.88 kJ/mol = -3879.6 J/mol

equilibrium constant ΔGº is -3879.6 J/mol

This is importance of ΔG compared with that of ΔGº

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Answer:

2 and 4 and 3

Explanation:

in c. leading 0's are never significat. Numbers 1-9 are always significant.

d. leading 0's are never significant. numbers 1-9 are always significant. ending 0's are only significant when there is a decimal.

e. numbers 1-9 are always significant. 0's are not significant because there is no decimal.

Answer:

The primary distinction between liquid and aqueous is that liquid refers to any fluid that is almost incompressible, whereas aqueous refers to liquids that contain water as the solvent.

Explanation:

Answer:

Explanation:

The equilibrium constant expression for the given reaction is:

Keq = [Cl₂][PCI₃] / [PCl₃]

We are given the equilibrium constant (Keq) as 2.24 x 10^-2 at 327°C, as well as the initial concentrations of PCl₃ and PCI₃. We need to determine the equilibrium concentration of Cl₂.

Let's assume that the change in concentration of PCl₃ is -x, the change in concentration of Cl₂ is +x, and the change in concentration of PCI₃ is +x, at equilibrium. Then, the equilibrium concentrations are:

[PCl₃] = 0.235 - x

[Cl₂] = x

[PCI₃] = 0.174 + x

Substituting these expressions into the equilibrium constant expression, we get:

2.24 x 10^-2 = (x)(0.174 + x) / (0.235 - x)

Simplifying and rearranging this equation, we get a quadratic equation:

2.24 x 10^-2 (0.235 - x) = x (0.174 + x)

0.00526 - 2.24 x 10^-2 x = 0.174x + x^2

x^2 + 0.138x - 0.00526 = 0

We can solve this quadratic equation to find the value of x:

x = 0.046 M (rounded to 3 significant digits)

Therefore, the equilibrium concentration of Cl₂ is 0.046 M, which is the same as the change in concentration of Cl₂.

Since the equilibrium concentration of Cl₂ is greater than zero, this means that the products (Cl₂ and PCI₃) are favored at equilibrium.

According to the research, the correct option is C. A scatterplot identifies the problem and its variables showing quantitative data that relate two variables.

It is a control and support tool that shows a geometric design that presents the existing links and the level of correlation between variables and how one variable influences another.

In this sense, given that it is a tool or graphic representation it is widely used in statistics, that helps to identify the possible association between two related sets of data, it seeks to correlate said variables in order to better control the process and improve it.

Therefore, we can conclude that according to the research, the correct option is C. A scatterplot identifies the problem and its variables showing quantitative data that relate two variables.

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The mass of NaNO3 would be needed to make a saturated solution in 200 mL of water at 80°C is 296g.

A solubility curve is the line drawn on a graph to depict the relationship between temperature and a substance's solubility at various temperatures. Where the solution is saturated is shown by the lines on the solubility curve. Anywhere below the lines, there is still room for more solute to dissolve because the solution is not saturated.

Solubility of NaNO3 in water at 80°C is 148g/100mL.

The quantity of water at 80°C = 200 mL

Therefore, the weight of NaNO3 = 148g/100mL x 200mL

                                                         => 296g

A saturated solution is one that has as much solute in it as can be dissolved under the circumstances in which it is present. Seawater, Epsom bath salts, carbonated beverages, and powdered beverages are a few examples of saturated solutions.

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Answer:

Mass = 18.36 g

Explanation:

Given data:

Mass of nitrogen = 15 g

Mass of hydrogen = 4 g

Mass of ammonia produced = ?

Solution:

Chemical equation:

N₂ + 3H₂      →       2NH₃

Number of moles of nitrogen:

Number of moles = mass/molar mass

Number of moles = 15 g/ 28 g/mol

Number of moles  = 0.54 mol

Number of moles of hydrogen:

Number of moles = mass/molar mass

Number of moles = 4 g/ 2 g/mol

Number of moles  = 2 mol

now we will compare the moles of ammonia with nitrogen and hydrogen.

                    H₂            :            NH₃

                      3             :             2

                     2              :            2/3×2 = 1.3

                      N₂            :            NH₃

                      1               :             2

                  0.54             :            2/1×0.54 = 1.08

less number of moles of ammonia are produced by nitrogen thus it is limiting reactant.

Mass of ammonia:

Mass = number of moles × molar mass

Mass = 1.08 mol × 17 g/mol

Mass = 18.36 g

Answer: 24.32 AMU

Explanation:

See attachment.

The number of pages Shawn can type in one hour will depend on the length of the pages, the complexity of the content, and Shawn's typing speed.

Speed is the rate of motion or action, usually measured relative to a given reference point. It is a scalar quantity, meaning it only has magnitude, not direction. Speed is usually expressed in units of distance per unit of time, such as meters per second (m/s). Speed is sometimes referred to as velocity, which is a vector quantity that also includes direction. Speed is a fundamental physical quantity, and is one of the most commonly used measurements in everyday life. Examples of speed include the speed of a car, the speed of a person running, and the speed of light. Speed is an important factor in many real-life scenarios, such as driving, traveling, and sports.

Without more information, it is not possible to accurately estimate the number of pages Shawn can type in an hour.

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Answer:

The number of proton of magnisium = 12

Answer:

a minimum of 10,000 years

Answer:millions of years

Explanation:

Edge 2021

Then attraction holds individual covalent molecules together as a solid are the force that hold the atom together if the each atom nucleus for the shared pair of electrons. the covalent compounds have very low melting point and boiling point.

The covalent bond form between the atoms by the sharing of electron. when there is no much difference in electronegativity of the atoms then the electrons are equally shared between two atoms. the mutual sharing of electrons formed covalent bond . the compound is called as covalent compound or molecules.  the molecules held by very weak intermolecular forces and it is very easy to break them . so, they have low melting point and boiling point.

Thus, Then attraction holds individual covalent molecules together as a solid are the force that hold the atom together if the each atom nucleus for the shared pair of electrons .the covalent compounds have very low melting point and boiling point.

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Answer:

The reason why atomic mass is usually not a whole number is because it is a weighted average of the mass numbers of isotopes

Explanation:

Answer:

Potential Energy (PE), assuming KE means Kinetic Energy here.

Explanation:

The car has KE when it's in motion, but when it collides with an object, it is stopped, replacing the KE with PE since it is no longer in motion.

I hope this makes sense! If not, I'll clarify better. :D

Dissolving sugar in water results in an increase in the entropy.

Hence, Option (D) is correct answer.

Measurement of randomness of a system is called entropy. It is an extensive property. It is a state function. Unit of entropy is JK⁻¹ mol⁻¹.

Now lets check all options one by one

Option (A): Freezing water

Freezing water decreases the entropy because here second law of thermodynamics does not violate.

So it is incorrect option

Option (B): Cooling water

Cooling water does not increases entropy because entropy increases when solid melts to give liquid.

So it is incorrect option

Option (C): Condensing water vapour

In Condensing water vapour the temperature of liquid phase decreases and thus kinetic energy decreases. The randomness will decrease and hence entropy will also decrease.

So it is incorrect option.

Option (D): Dissolving sugar in solute

In dissolving sugar in solute the solid dissociates to ions and  the randomness will increase and hence entropy will also increase.

So it is correct option

Thus from the above conclusion we can say that Dissolving sugar in water results in an increase in the entropy.

Hence, Option (D) is correct answer.

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Copper has the highest conductivity of any metal used in electronics. The statement is false.

Silver is the element that conducts electricity the best, followed by copper and gold.

The earth's most conductive metal is by far silver. Silver only has one valence electron, which explains this. This one electron can also go about freely and encounter little opposition. As a result, some of the metals with this particular property are silver and copper.

Silver is the metal with the highest thermal and electrical conductivity because of its distinctive crystal structure and lone valence electron.

Since copper is the non-precious metal with the highest conductivity, it has a higher electrical current carrying capacity than other non-precious metals. The strength of the metal rises when tin, magnesium, chromium, iron, or zirconium are added to copper to create alloys, but its conductivity decreases.

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